UK area code
01920 area code — Ware
01920 is Ofcom’s Ware numbering area, in Hertfordshire, East of England England. 89 phone companies hold its 139 allocated number blocks. Its numbers are written like 01920 234 567. The nearest other codes are 01992 Lea Valley (6 km) and 01707 Welwyn Garden City (11 km).
01920 at a glance
- Ofcom area name
- Ware
- County
- Hertfordshire
- Council area
- Hertfordshire
- Region
- East of England England
- Number format
- 01920 234 567 (4+6)
- Local calls
- Full number recommended
- Current code since
- 1995 (previously 0920)
- Allocated blocks
- 139 of 388 (36%) across 89 providers
- Newest block
- 17 March 2026 (2 in the last 12 months)
Sources: Ofcom numbering data (weekly) and area-code list, Ofcom Numbering Plan, ONS geography.
If a 01920 number called you
No clear pattern in reports for these numbers yet. If a call worried you:
- 1
Call back on a number you trust
If a caller says they're your bank, HMRC, a courier or a council, hang up and ring the organisation on the number from its website or your statement, never the number that called you. Caller ID can be faked.
- 2
Forward it to 7726
On a mobile, copy the caller's number from your recent calls and text it to 7726 (it spells SPAM). Scam texts can be forwarded to 7726 as they are. It's free, and your network uses the reports to investigate and block numbers.
- 3
Stop sales calls
Register your landline and mobile free with the Telephone Preference Service (0345 070 0707). Legitimate UK marketers must check it; calls should drop within 28 days. It won't stop scammers.
- 4
If you lost money or shared details
Call your bank on the number on your card (or 159 to reach most UK banks safely), then report it to Report Fraud online or on 0300 123 2040. Report Fraud replaced Action Fraud on 4 December 2025 for England, Wales and Northern Ireland; in Scotland call Police Scotland on 101.
01920 history and number format
Number format: Numbers on 01920 use Ofcom's 4+6 format: the 5-digit code (including the leading 0) followed by a 6-digit local number — written like 01920 234 567.
Before 1995: 01920 took its current form at PhONEday on 16 April 1995, when a "1" was inserted into every UK geographic code — before that the area dialled 0920.
Local dialling: Traditionally not from another 01920 landline, but it now depends on your provider: Ofcom stopped requiring providers to offer local (code-free) dialling on 11 March 2022. Dialling 01920 first always works, and mobiles always need it.
Allocation record: the oldest number block still visible on 01920 was allocated on 15 July 1994, and the most recent on 17 March 2026. 2 blocks were allocated in the last 12 months — newly-activated ranges with no call history, which is worth knowing when an unfamiliar 01920 number rings (see the weekly numbering changelog for every new allocation.)
Phone companies holding 01920 numbers
Every Ofcom range holder with blocks on 01920, by allocated blocks. The holder is the company Ofcom allocated the block to; a number can since have been ported to another provider (see range holder vs current provider).
| Range holder | Allocated | All blocks | First block | Latest block |
|---|---|---|---|---|
| GCI Network Solutions Limited | 12 | 12 | 2 May 2017 | 26 February 2024 |
| BT | 11 | 11 | 15 July 1994 | 28 August 2020 |
| Virgin Media Limited | 11 | 11 | 22 August 1995 | 26 July 2012 |
| Vodafone Ltd (C&W) | 8 | 8 | 5 September 2013 | 9 September 2013 |
| Sky UK Limited | 4 | 4 | 28 June 2013 | 5 July 2022 |
| Six Degrees Technology Group Limited | 3 | 3 | 14 January 2020 | 14 January 2020 |
| TalkTalk Communications Limited | 3 | 3 | 18 January 2012 | 26 March 2019 |
| Adepteo Limited | 2 | 2 | 29 November 2016 | 29 November 2016 |
| Digital Space Group Limited | 2 | 2 | 4 June 2008 | 15 March 2016 |
| Fuse 2 Communications Ltd | 2 | 2 | 3 July 2017 | 22 January 2024 |
| ICC Networks Ltd | 2 | 2 | 13 April 2012 | 18 April 2012 |
| Orange Business Holdings UK Limited | 2 | 2 | 9 December 2014 | 9 December 2014 |
| (AQ) LIMITED | 1 | 1 | 27 September 2012 | 27 September 2012 |
| 24 Seven Cloud Communications Ltd | 1 | 1 | 27 January 2020 | 27 January 2020 |
| 8x8 Communications UK Limited | 1 | 1 | 19 April 2012 | 19 April 2012 |
| AQL Wholesale Ltd | 1 | 1 | 3 January 2008 | 3 January 2008 |
| Andrews & Arnold (Numbers) Ltd | 1 | 1 | 9 April 2009 | 9 April 2009 |
| Atomstream Limited | 1 | 1 | 13 April 2010 | 13 April 2010 |
| Barritel Limited | 1 | 1 | 21 June 2007 | 21 June 2007 |
| Belgacom International Carrier Services SA | 1 | 1 | 10 July 2020 | 10 July 2020 |
| Bicom Systems EURL | 1 | 1 | 1 March 2012 | 1 March 2012 |
| Bink Networks Ltd | 1 | 1 | 11 April 2023 | 11 April 2023 |
| CFL Communications Ltd | 1 | 1 | 21 July 2009 | 21 July 2009 |
| Calltracks Limited | 1 | 1 | 20 September 2013 | 20 September 2013 |
| Colt Technology Services | 1 | 1 | 7 May 2015 | 7 May 2015 |
| Content Guru Limited | 1 | 1 | 11 October 2012 | 11 October 2012 |
| Convergence Group (wireless) Networks Limited | 1 | 1 | 21 May 2019 | 21 May 2019 |
| DIDWW Ireland Limited | 1 | 1 | 22 January 2019 | 22 January 2019 |
| Datazero Ltd | 1 | 1 | 12 November 2010 | 12 November 2010 |
| Dial 9 Communications Limited | 1 | 1 | 13 January 2020 | 13 January 2020 |
Showing the 30 largest of 89 holders.
All number blocks on 01920first 200 of 388, by prefix
| Prefix | Status | Range holder |
|---|---|---|
| +44 192000 | Protected | — |
| +44 192001 | Protected | — |
| +44 192002 | Protected | — |
| +44 192003 | Protected | — |
| +44 192004 | Protected | — |
| +44 192005 | Protected | — |
| +44 192006 | Protected | — |
| +44 192007 | Protected | — |
| +44 192008 | Protected | — |
| +44 192009 | Protected | — |
| +44 192010 | Protected | — |
| +44 192011 | Protected | — |
| +44 192012 | Protected | — |
| +44 192013 | Protected | — |
| +44 192014 | Protected | — |
| +44 192015 | Protected | — |
| +44 192016 | Protected | — |
| +44 192017 | Protected | — |
| +44 192018 | Protected | — |
| +44 192019 | Protected | — |
| +44 192020 | Allocated | TelNG Limited |
| +44 192021 | Allocated | TTNC Limited |
| +44 1920220 | Protected | — |
| +44 1920221 | Protected | — |
| +44 1920222 | Protected | — |
| +44 1920223 | Protected | — |
| +44 1920224 | Protected | — |
| +44 1920225 | Protected | — |
| +44 1920226 | Protected | — |
| +44 1920227 | Protected | — |
| +44 1920228 | Protected | — |
| +44 1920229 | Protected | — |
| +44 192023 | Allocated | Localphone Limited |
| +44 192024 | Allocated | (AQ) LIMITED |
| +44 192025 | Allocated | Barritel Limited |
| +44 192026 | Allocated | VoIP-Un Limited |
| +44 1920270 | Protected | — |
| +44 1920271 | Protected | — |
| +44 1920272 | Protected | — |
| +44 1920273 | Protected | — |
| +44 1920274 | Protected | — |
| +44 1920275 | Protected | — |
| +44 1920276 | Protected | — |
| +44 1920277 | Allocated | Spitfire Network Services Limited |
| +44 1920278 | Protected | — |
| +44 1920279 | Protected | — |
| +44 192028 | Allocated | AQL Wholesale Ltd |
| +44 192029 | Allocated | Voiceflex Limited |
| +44 192030 | Protected | — |
| +44 1920310 | Protected | — |
| +44 1920311 | Protected | — |
| +44 1920312 | Protected | — |
| +44 1920313 | Protected | — |
| +44 1920314 | Protected | — |
| +44 1920315 | Protected | — |
| +44 1920316 | Protected | — |
| +44 1920317 | Protected | — |
| +44 1920318 | Allocated | TalkTalk Communications Limited |
| +44 1920319 | Allocated | TalkTalk Communications Limited |
| +44 192032 | Allocated | Flextel Limited |
| +44 1920330 | Allocated | Inet Telecoms Ltd (Voipfone) |
| +44 1920331 | Allocated | Internexus Networks Limited |
| +44 1920332 | Allocated | Minotaur Telecom Limited |
| +44 1920333 | Allocated | VoiceHost Limited |
| +44 1920334 | Allocated | Hello Telecom (UK) Limited |
| +44 1920335 | Allocated | Orbtalk Limited |
| +44 1920336 | Allocated | Bicom Systems EURL |
| +44 1920337 | Allocated | ICC Networks Ltd |
| +44 1920338 | Protected | — |
| +44 1920339 | Allocated | ICC Networks Ltd |
| +44 192034 | Allocated | BT |
| +44 1920350 | Allocated | Digitech Solutions Global Limited |
| +44 1920351 | Allocated | 8x8 Communications UK Limited |
| +44 1920352 | Allocated | IOVOX Limited |
| +44 1920353 | Allocated | Ziron Limited |
| +44 1920354 | Protected | — |
| +44 1920355 | Allocated | Invoco Ltd |
| +44 1920356 | Allocated | Content Guru Limited |
| +44 1920357 | Protected | — |
| +44 1920358 | Allocated | Simwood eSMS Limited |
| +44 1920359 | Allocated | XoverX Ltd |
| +44 1920360 | Allocated | Vodafone Ltd (C&W) |
| +44 1920361 | Allocated | Vodafone Ltd (C&W) |
| +44 1920362 | Allocated | Vodafone Ltd (C&W) |
| +44 1920363 | Allocated | Vodafone Ltd (C&W) |
| +44 1920364 | Allocated | Vodafone Ltd (C&W) |
| +44 1920365 | Allocated | Vodafone Ltd (C&W) |
| +44 1920366 | Allocated | Vodafone Ltd (C&W) |
| +44 1920367 | Protected | — |
| +44 1920368 | Protected | — |
| +44 1920369 | Protected | — |
| +44 192037 | Protected | — |
| +44 1920380 | Protected | — |
| +44 1920381 | Protected | — |
| +44 1920382 | Protected | — |
| +44 1920383 | Protected | — |
| +44 1920384 | Protected | — |
| +44 1920385 | Protected | — |
| +44 1920386 | Protected | — |
| +44 1920387 | Protected | — |
| +44 1920388 | Protected | — |
| +44 1920389 | Protected | — |
| +44 192039 | Protected | — |
| +44 192040 | Allocated | Vodafone Ltd (C&W) |
| +44 192041 | Allocated | Virgin Media Limited |
| +44 1920420 | Allocated | Virgin Media Limited |
| +44 1920421 | Allocated | Virgin Media Limited |
| +44 1920422 | Allocated | Virgin Media Limited |
| +44 1920423 | Allocated | Virgin Media Limited |
| +44 1920424 | Allocated | Virgin Media Limited |
| +44 1920425 | Allocated | Virgin Media Limited |
| +44 1920426 | Allocated | Virgin Media Limited |
| +44 1920427 | Allocated | Virgin Media Limited |
| +44 1920428 | Allocated | Virgin Media Limited |
| +44 1920429 | Allocated | Virgin Media Limited |
| +44 192043 | Allocated | BT |
| +44 192044 | Allocated | BT |
| +44 192045 | Allocated | Gamma Telecom Holdings Limited |
| +44 192046 | Allocated | BT |
| +44 192047 | Allocated | GCI Network Solutions Limited |
| +44 192048 | Allocated | BT |
| +44 192049 | Allocated | Nationwide Telephone Assistance Ltd |
| +44 192050 | Allocated | Net-Work Internet Ltd |
| +44 1920510 | Allocated | Adepteo Limited |
| +44 1920511 | Protected | — |
| +44 1920512 | Allocated | Sky UK Limited |
| +44 1920513 | Allocated | Adepteo Limited |
| +44 1920514 | Allocated | Fuse 2 Communications Ltd |
| +44 1920515 | Protected | — |
| +44 1920516 | Allocated | EVE CONNECT LTD |
| +44 1920517 | Allocated | Digital Space Group Limited |
| +44 1920518 | Allocated | DIDWW Ireland Limited |
| +44 1920519 | Allocated | IP Voice Networks Ltd |
| +44 192052 | Allocated | Redcentric Solutions Limited |
| +44 192053 | Allocated | Telecom2 Limited |
| +44 192054 | Allocated | Digital Space Group Limited |
| +44 192055 | Allocated | Nodemax Limited |
| +44 1920560 | Allocated | Voxbone SA |
| +44 1920561 | Protected | — |
| +44 1920562 | Protected | — |
| +44 1920563 | Protected | — |
| +44 1920564 | Protected | — |
| +44 1920565 | Protected | — |
| +44 1920566 | Protected | — |
| +44 1920567 | Protected | — |
| +44 1920568 | Protected | — |
| +44 1920569 | Protected | — |
| +44 192057 | Protected | — |
| +44 192058 | Allocated | Solutios Limited |
| +44 192059 | Quarantined | — |
| +44 192060 | Allocated | Served Up Limited |
| +44 192061 | Allocated | Mars Communications Limited |
| +44 192062 | Protected | — |
| +44 1920630 | Allocated | Phone Co-Op Numbering Limited |
| +44 1920631 | Protected | — |
| +44 1920632 | Allocated | Lanonyx Telecom Limited |
| +44 1920633 | Allocated | BT |
| +44 1920634 | Allocated | Sky UK Limited |
| +44 1920635 | Protected | — |
| +44 1920636 | Protected | — |
| +44 1920637 | Protected | — |
| +44 1920638 | Protected | — |
| +44 1920639 | Protected | — |
| +44 1920640 | Allocated | GCI Network Solutions Limited |
| +44 1920641 | Allocated | GCI Network Solutions Limited |
| +44 1920642 | Allocated | GCI Network Solutions Limited |
| +44 1920643 | Allocated | GCI Network Solutions Limited |
| +44 1920644 | Allocated | GCI Network Solutions Limited |
| +44 1920645 | Allocated | GCI Network Solutions Limited |
| +44 1920646 | Allocated | GCI Network Solutions Limited |
| +44 1920647 | Allocated | GCI Network Solutions Limited |
| +44 1920648 | Allocated | GCI Network Solutions Limited |
| +44 1920649 | Allocated | GCI Network Solutions Limited |
| +44 192065 | Allocated | Andrews & Arnold (Numbers) Ltd |
| +44 192066 | Allocated | Invade International Ltd |
| +44 192067 | Allocated | Telecoms World Limited |
| +44 192068 | Allocated | CFL Communications Ltd |
| +44 192069 | Quarantined | — |
| +44 192070 | Protected | — |
| +44 192071 | Protected | — |
| +44 192072 | Allocated | Nexus Telecommunications Limited |
| +44 1920730 | Allocated | Atomstream Limited |
| +44 1920731 | Allocated | Calltracks Limited |
| +44 1920732 | Allocated | Windsor Telecom Limited |
| +44 1920733 | Allocated | Telappliant Limited |
| +44 1920734 | Allocated | TGL Services (UK) Ltd |
| +44 1920735 | Allocated | Datazero Ltd |
| +44 1920736 | Allocated | Telephone Box Limited |
| +44 1920737 | Allocated | Suretec Systems Ltd |
| +44 1920738 | Protected | — |
| +44 1920739 | Allocated | Sky UK Limited |
| +44 1920740 | Allocated | INTELLIGENT EXCHANGES LIMITED |
| +44 1920741 | Protected | — |
| +44 1920742 | Allocated | Nexbridge Communications Limited |
| +44 1920743 | Allocated | HAVENSTOKE COMMUNICATIONS LTD |
| +44 1920744 | Allocated | Invosys Limited |
| +44 1920745 | Allocated | Sky UK Limited |
| +44 1920746 | Allocated | Colt Technology Services |
| +44 1920747 | Allocated | Kalnet4U Ltd |
| +44 1920748 | Allocated | Convergence Group (wireless) Networks Limited |
Related lookups
- 01992 Lea Valley6 km away
- 01707 Welwyn Garden City11 km away
- 01279 Bishops Stortford15 km away
- 01438 Stevenage15 km away
- GCI Network Solutions Limited12 allocated blocks on 01920
- BT11 allocated blocks on 01920
- Virgin Media Limited11 allocated blocks on 01920
- All UK towns A–ZDialling codes by town
- More Hertfordshire codesSame region
- All UK area codesBrowse every 01/02 dialling code
- Lookup any UK numberFree reverse phone lookup
- UK area codes explainedCornerstone guide
- 020 London numbers explainedCornerstone guide
- 0330 numbers explainedCornerstone guide
- How Ofcom allocates UK phone numbersCornerstone guide
FAQs about 01920
Where is area code 01920?
01920 is Ofcom's Ware numbering area, in Hertfordshire, East of England England. Its exchange town is in Hertfordshire. From abroad, drop the 0 and dial +44 1920.
Do I need to dial 01920 for a local call?
Traditionally not from another 01920 landline, but it now depends on your provider: Ofcom stopped requiring providers to offer local (code-free) dialling on 11 March 2022. Dialling 01920 first always works, and mobiles always need it.
How are 01920 numbers written?
Numbers on 01920 use Ofcom's 4+6 format: the 5-digit code (including the leading 0) followed by a 6-digit local number — written like 01920 234 567. From abroad the leading zero is dropped: +44 1920 then the local number.
What was the 01920 area code before?
01920 took its current form at PhONEday on 16 April 1995, when a "1" was inserted into every UK geographic code — before that the area dialled 0920. Old signage or stationery showing 0920 refers to the same Ware numbers.
Which phone companies hold 01920 numbers?
Ofcom lists 89 providers with allocated blocks on 01920. The largest are GCI Network Solutions Limited with 12 of the 139 allocated blocks, BT with 11 of the 139 allocated blocks and Virgin Media Limited with 11 of the 139 allocated blocks. Numbers can be ported, so a number's current provider may differ from the block's holder.
Which area codes are next to 01920?
By distance between exchange towns, the nearest other codes are 01992 Lea Valley (6 km), 01707 Welwyn Garden City (11 km), 01279 Bishops Stortford (15 km) and 01438 Stevenage (15 km).
How do I report a scam call from a 01920 number?
On a mobile, text the caller's number to 7726 (free). If you lost money or shared details, call your bank and report it to Report Fraud (0300 123 2040), which replaced Action Fraud in December 2025. Unwanted sales calls go to the ICO after registering with the Telephone Preference Service.